Congratulations on the anticipated addition to your family! How exciting. And I know it's so important to give this child a name that represents all of your hopes and dreams for his future and one that will make him stand out from the crowd. No John Jones name for this kid. He needs one as special as he is.
Now, this is a really radical thought but ... does he really need a middle name? What is the purpose of the middle name? Is it a backup in case the first name doesn't work out? Is it a support mechanism/warning signal to let him know when he's in serious trouble? (Levi James you get in there and pick up your toys right this minute!)?
If you are 'taste testing' names, chances are you are not instilling ancestry into the mix by weighing and balancing fathers' names, grandfathers' or great-grandfathers' names. So what's really at the root of it? Is it just a societal habit that dictates we stick an extra name in there?
Besides, if you are not careful, middle names can lead to some really disastrous nicknames: Consider Keith Everett Gaines is a KEG; Patricia Inez Galloway is a PIG; Felicity Amanda Truman is FAT; David Ulysses Moore is DUM; Stephen Orwell Bates is an SOB; and Daniel Ira Kinsey will always be a ... well, you get the picture.
In ages past, middle names were used to ensure family names were carried on. When Miss Longworth married Mr. Bolt, she became Mrs. Bolt. She had no brothers to carry on her family name so, to secure her family's name for future generations, her firstborn child was named Samuel Longworth Bolt. Or, to secure her progenitor's name for the future, her firstborn might be named for her father as well as her husband's father and the poor first child might be saddled with Constantine Horatio Bolt. The wealthier or higher up the the social register, the more important it was to preserve one's 'bloodline' (particularly with royalty) so a child might be stuck with five or more 'middle names'. If you can, imagine a little toddler burdened with a name like, "Pallus William Alfred Marchand Marie Richmond Baltimore Franklin Walden" Ouch! One royal years ago was lashed with a name about 17 names long! Ouch! Way too many ancestors to give a nod to.
So, does your anticipated bundle of joy really need a middle name, a vestige of a long ago time? Probably not. In fact, not having a middle name can really make him stand out in a crowd. Neither my son nor daughter was given a middle name at birth. When they grew older, each had an opportunity to legally change his or her name and add a middle name. My son, for many years, tried out various names that pleased him and, as an adult, eventually settled on Logan. My daughter, who used to joke that her middle name was NMI (No Middle Initial) because it was always filled in on forms that required a middle initial. She never felt the need for a middle name and, as an adult, still has no middle name other than her maiden name as she took her husband's last name when she married.